linux-ext4 - [PATCH 1/2] libext2fs: Add ext2fs_file_get_inode

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Message-ID: <20120107085529.4325.17894.stgit@elm3c44.beaverton.ibm.com>
Date:	Sat, 07 Jan 2012 00:55:29 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Theodore Tso <tytso@....edu>, "Darrick J. Wong" <djwong@...ibm.com>
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH 1/2] libext2fs: Add ext2fs_file_get_inode_num call (for
	fuse2fs)

Add a function to return the inode number of an open file.

Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---
 lib/ext2fs/ext2fs.h |    1 +
 lib/ext2fs/fileio.c |    8 ++++++++
 2 files changed, 9 insertions(+), 0 deletions(-)


diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 227ee58..0b4b285 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1094,6 +1094,7 @@ extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
 				  int flags, ext2_file_t *ret);
 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
+extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
 extern errcode_t ext2fs_file_close(ext2_file_t file);
 extern errcode_t ext2fs_file_flush(ext2_file_t file);
 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
diff --git a/lib/ext2fs/fileio.c b/lib/ext2fs/fileio.c
index 8751635..1f7002c 100644
--- a/lib/ext2fs/fileio.c
+++ b/lib/ext2fs/fileio.c
@@ -106,6 +106,14 @@ struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file)
 	return &file->inode;
 }
 
+/* This function returns the inode number from the structure */
+ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file)
+{
+	if (file->magic != EXT2_ET_MAGIC_EXT2_FILE)
+		return 0;
+	return file->ino;
+}
+
 /*
  * This function flushes the dirty block buffer out to disk if
  * necessary.

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